•Walk-through—performed by
the crime scene investigator, the first officer and sometimes the lead detective
•Purpose:
§Mentally prepare a reconstruction theory
§Note any transient or conditional evidence that could
change over time.
§Note weather conditions
§Note points of entry or exit, as well as paths of travel
within the crime scene
§Record initial observations of who, what, where, when,
and how
§Identify special needs within the crime scene for
personnel, precautions or equipment
and notify superior officers or other agencies